This is so simple that we might not think about it. Scenario: you want to add a note to say, the whole of the Sermon on the Mount. One option, is to try to select the whole text from the Bible resource window. So you hold and drag. You will quickly find out that this is most annoying.
Solution: Just open your note file, click on Add Note, then click on the arrow pointing down top right of the new note window and select "Edit attachment points". Enter Mt 5-7 (for the Sermon on the Mount), wait for it to appear in the list of suggestion, then click on the little arrow in the reference box.
NB: If you do not click on the little arrow in the reference box but on "Attach to current selection," the note will be attached to the specific Bible you were using at the time. The procedure described in the paragraph above attaches to the reference only, not to a specific resource.
BTW, this functionality also means that you can quickly create Bible notes without even having a Bible open.